Suction cleaner



. SUQTION CLEANER Filed Nov. 27, 1953 2 Sheets-Sheet l g a INVENTO R 'flanald 6. J'mellz'e ATTORNEY Sept. 10, 1935. D, G, ELL; 2,014,118

SUCTION CLEANER Filed Nov- 27, 1933 2 S hee ts-Sheet 2 INVENTOR Donald 6? Jmellz'e ATTORNEY Patented Sept. 10, 1935 UNITEDSTATES PATENT OFFICE 2,014,118 SUCTION CLEANER Donald G. Smellie, Canton, Ohio, assignor to The Hoover Company, North Qanton, Ohio, a corporation of Ohio Application November 27, 1933, Serial No. 699,834

8 Claims. (01. 183-51) This invention relates to suction cleaners, and

nozzles. One of the objects of the invention is ,to provide a dust bag suitable for use with a suction cleaner which has two fans, each having a separate outlet, so that either fan may be used without danger of air being forced backward-in the other fan outlet. Further objects are to provide a bag which can be economically manufactured, which will present a neat appearance,

' which will be durable, and which can be conveniently emptied. A still further object is to provide a -bag of this type which can be conveniently attached to the cleaner, and other objects of invention and novel 'featureswill be apparent from the following specification, when read with reference to the accompanying drawings, in which:--

Fig; 1 is a view in side elevation, partly broken away, of a suction cleaner and bag embodying the invention;

' Fig. 2 is an enlarged fragmentary view in horizontal section, with parts broken away, of part of the structure shown in Fig. 1, illustrating the connection between the dust bag and the cleaner outlet;

Fig. 3 is a view in perspective of one of the parts shown in Figs. 1 and 2;

Fig. 4 is a fragmentary view in vertical section of the parts shown in Fig. 2;

, Fig; 5 is a 'view in elevation of the cleaner outlet, taken on the line 5-5 of Fig. 4;

' Fig. 6 is a view in perspective of the inlet end -in-Fig.,5 removed; v s Fig.'7 is a view in elevation of the inlet end of the bag, taken on line I -l of Fig. 4, certain parts being broken away; i Fig. 8 is a fragmentary viewin perspective of the upper-end of "the bag shown in Fig. 1;

Fig. 9 .is a fragmentary view in vertical section, similar to Fig. 4-, but showing a modified form of attaching means; 1

so designed as to effect a relatively higher suction of the bag shown in Fig.4, with the part shown taken on line |2|2 of Fig. 11, certain of the Fig. 10 is a view in elevation of the inlet end of the bag, taken on line l0=l0 of Fig. 9;

Fig. 11 is a fragmentary view in vertical section, similar to Fig. 4, but showing still another modified form of bag structure;

"Fig. 12 is a view in elevation of the bag inlet,

parts'being broken away;

Fig. 13 is a detail view in perspective of onev of the parts shown in Figs. 11 and 12;

Fig. '14 is a fragmentary view in perspective of the upper end, of still another modified form of a bag; and i i Fig. 15 is a fragmentary view in vertical, longitudinal section. taken on'line |5-|5 of Fig. 14. 15

. 7 In the drawings there is illustrated, in Fig. 1, a

suction-cleaner comprising a body ll, having an electric motor l2 thereon which operates fans I3 and 14, such fans being located in separate fan chambers which are parts of separate conduits leading from nozzles I Sand I6 to separate outlets I1 and I8. The suction cleaner as a whole is mounted on" wheels I 9, and provided with a handle 20, pivoted to the suction cleaner body I I at 2|, by which it may be readily moved about and guided over the floor covering, it being understood that the nozzles l5 and iii are supported. slightly above the normal level of the floor 'covering, and that the motor 12 is supplied with current through a-cable 22 which'preferably enters the handle 20 near its upper end, a suitable switch 23 being provided to control operation of the motor. The handle is also preferably provided with suitable yieldable means 24 for supporting the upper end of the bag, and the outlets I1 and I8 are each preferably semi-circular in cross section and formed together in a circular rearward outlet extension which terminates in a substantially vertical plane and is provided with a peripheral flange 25 and a horizontal partition 26, which 4 constitutes the commonwall between the conduits l1 and iii. In the structure shown, a rotary agitator 21 is mounted in the rear nozzle l5, which "is wider than the forward nozzle IS, the agitator being driven by a belt128 from a pulley 29 on the motor shaft, and a removable cover plate 30 is provided to permit access to the belt and pulley. As stated above, all of such structure has been proposed heretofore andthe present invention relates to dust bags for use as a part of a suction cleaner of such, or similar, construction. J

It will be apparent that, in a machine such as that illustrated, the amountof air handled by the fans will be different, and it is desirable that the suction in the nozzle [5 be materially higher than that in the agitator nozzle i6 and that, if the outlets of the fans were'connectedto the same dust bag they would have to operate against the same back pressure from the bag and it would be more difficult to obtain a high suction in the nozzle i5 than if the fan connected to such nozzle discharged to a dust bag of itsown. It will likewise be apparent that if, in a double nozzle machine of this type, provision were made for using only one of the nozzles, when desired, as by closing the other nozzle, removing the lower fan l4, or by some other expedient, and the outlets were connected to the same common bag, the back pressure from the bag would force the air backward into the outlet from the other nozzle.

In order to obviate these difliculties, the bag 3i shown herein, in accordance with the invention, is formed of filtering material and provided with a diaphragm or partitibn 32 of impermeable material, preferably extending from end to end of the bag, such partition being arranged horizontally to register with the partition 26 between the fan outlets, and dividing the bag into separate compartments.

As shown in Figs. 1 to 8, the bag 3i is of a usual shape, having a narrowed inlet end 33, and formed of an upper portion 34 and a lower portion 35, the edges .of such bag portions being sewed together, and the edges of thediaphragm or partition 32 being secured thereto, by internal seams 36. The width of the diaphragm 32 is considerably less than the width of the upper and lower portions 34 and 35, being no .wider than is the inflated bag, so that it is taut and substantially flat when the bag is inflated. At its upper end the bag 3| is provided with'folds 31, as shown in- Fig. 8, and the diaphragm 32 is preferably thickened, as shown at 36 in Fig. 8, between the inner edges of such folds, so as to present a substantially uniform thickness of the folded parts, and

prevent leakage when a supporting clip 39, of channeled, spring material, is slid laterally upon the end of the bag. The clip 39 acts both as a closure for the open upper end of the bag andas asupport therefor, a ball 40 being pivotally carried by the clip and detachably connected to the clamping band 42, having ends 43 projecting outwardly through the bag material for engagement by a bolt 44 by which the band may be contracted to clamp the mouth of the bag to the flange 45 of a bag ring 46. The bag ring 46 is formed with a diametrically extending bar 41,preferably rounded toward the front, and the diaphragm 32 has a tongue 48 extending through the bag mouth, and the full width thereof, for attachment to the cross bar 41 of the bag ring by a channeled clip 49 of spring material which is sprung into clamping relation thereon, as shown in Figs. 2, 4 and 7 The bag ring 46 is shaped to flt tightly'against the peripheral flange 25 of the cleaner outlet extension, and has laterally extending lugs thereon provided with slots 50 to receive threaded studs 5i which extendrearwardly from the flange 25' and carry nuts 52 for clamping the bag ring to the flange 26. The flange 25 is preferably formed with an tion, which is defined in the appended claims.

receive a similar gasket 53, the widened rear edge 5 of the partition 26 being also preferably channeled to flt the rounded face of the clip 43.

In the structure shown in Figs. 9 and 10, the bag ring 54 is formed with a cross bar 55, and 9. diametrically'extending clamping bar 56 of T-shape 10 in cross section is secured to the bag ring by screws 51. the tongue 48 being clamped between them, and the clamping bar 56 is countersunk into the face of the bag ring, so as to present a flat surface for contact with the flange of the 15 cleaner outlet and the partition 26a thereof.

The modified structure illustrated in Figs. 11 to 13 is substantially identical with that shown in Figs. 1 to 8, except for the addition of dual inlet valves extending into the inlet ends of the bag compartments. The tubular inlet valves 56 and 59 preferably taper slightly rearwardly, and are preferably made from a single piece of comparatively flexible cloth, or similar material, the central portion being adapted to be engaged over 25 the tongue 48 after it is folded over the cross bar 41, and the edges of the valve-forming portions being united in longitudinal seams 60 and 6|. At the'forward edge of the inlet valves the material forms a circular edge 62 which is clamped 30 outwardly into a groove 63 in the inner face of the bag ring by a, split spring ring 64, preferably formed of wire.

While it is usually \preferable that the bag compartments'be open at the top, for conven- 35 ience in emptying them, it will be evident that the upper endof the bag may be closed, as shown in Figs. 14 and 15. In such structure, the edges of the upper and lower bag portions 65 and 66 and the edges of the impermeable diaphragm 61 40 are sewed together not only along the sides but at the end of the bag, it being understood that, as in the other modifications,- such internal seams are sewed while the bag is turned inside out.

The use of an impermeable diaphragm, as de- 45 scribed, not only serves to prevent any undesirable back pressure, caused by one fan, from being imposed upon the other fan, and to prevent back currents from one fan in the outlet of the other 50 fan, but enables the shape of the inflated bag to 1 be modified, to a; certain extent, if desired. It

will also be evident that, when the handle of the cleaner is moved toward vertical position, whichis the usual storage position, the diaphragm will 55 act as a tension member, and will relieve the lower filtering portion of the bag from the tension which is exerted by the yieldable supporting means 24, thus prolonging its life.

, It will be understood that, by changing the 60 size and shape of the upper and lower filtering portions of the bag, the relative size of the compartments may be varied, if desired. It will also be understood that the bag and diaphragm may be made in one piece, if desired, the diaphragm- 5 forming portion being rendered impermeable to air by treatment with suitable material, and that many similar changes can be made in the details of construction within the scope of the inven-L What is claimed is:

1. A dust filtering bag for 1. suction cleaner, having an inlet opening at one end and having a diaphragm impervious to air arranged substantially diametrically thereof and ,bifurcating said 76 opening and said bagto divide said bag into separate non-communicating compartments.

2. A dust filtering bag for a suction cleaner, comprising a.tube of air-pervious material open at each end and a diaphragm extending longitudinally therein from end to end thereof and connecting at its side edges to said bag to form separate non-communicating pockets when one end of said bag is closed.

3. A dust filtering bag for a suction cleaner, formed ofair-pervious material and having an inlet opening at one end, said bag having 9. diaphragm therein extending from the inlet opening to the other end and connected at its sides to said bag, said diaphragm being formed of inextensible material and the length of the medial portion of said diaphragm being less than the length of the medial portion of the lowerpart of said bag,

4. The combination of a dust filtering bag for a suction cleaner, having an inlet mouth at one end and having a diaphragm therein dividing said bag into separate pockets and having a free edge adjacent said mouth, a. ring having a web extending across it, means for detachably securing said bag mouth to said ring, and means detachably securing said free edge of said diaphragm to said web.

5. The combination of a dust filtering bag for a suction cleaner, comprising a tube of air-pervious material open at each end to form a mouth and a diaphragm therein extending from end to end of said bag and connected at its sides to said bag, a ring having a transverse web, the

mouth at one end of said bag being secured to said ring and the corresponding end of said diaphragm being secured to said web, and means holding the mouth at the other end of the bag closed. 5

6. A dust filtering bag for a suction cleaner, having an inlet opening at one end and having a diaphragm impervious to air arranged substantially diametrically thereof and biIurcating said opening to divide said bag into separate compartments, and an inlet tube of flexible material extending from the inlet opening into each of said compartments, said inlet tubes being formed together as a unit.

7. The combination of a dust filtering bag for a suction cleaner, having a diaphragm extending substantially diametrically thereof and dividing the bag into separate compartments, a bag ring having a partition, said bag being secured to said partition, and an inlet tube in each of said compartments, said inlet tubes being formed as a unit and secured to said bag ring.

8. The combination with a suction cleaner having a plurality of air-moving means discharging through conduits terminating in adjacently positioned outlets, of av bag ring detachably secured to said conduits and having openings in line therewith separated by a partition, and a dust-filtering bag secured to said bag ring and having a diaphragm therein secured at one end to said partition and dividing said dust bag into separate compartments. Y

DONALD G. SMELLIE. 

